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39 votes
39 votes
Two functions are shown below. f (x) = 3x+ 7 g(x) = 2x + 12 What is the value of x where f(x) = g(x)?

User TabsNotSpaces
by
3.1k points

1 Answer

4 votes
4 votes

1) We've been told that there two functions, so let's equate them to find the value of x, which is common to both functions.

f(x) = g(x) Plug into that the whole function

3x+7 =2x +12 Subtract 7 from both sides

3x =2x +12 -7

3x = 2x +5 Subtract 2x from both sides

3x -2x=5

x =5

2) Hec

User Sherif Ahmed
by
2.7k points
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